如何在收集和使用模型骨干动态URL [英] how to create dynamic url in collection and model using backbone

问题描述

我的采集和模型是这样的：

My collection and model like this:

detail_userid = 0;
detail_contactid = 0;
var ContactDetail = Backbone.Model.extend({  
    urlRoot: URL_CONTACTS1+detail_userid+"/"+detail_contactid
});

var ContactDetailCollection =  Backbone.Collection.extend({ 
    model: ContactDetail,
    url: URL_CONTACTS1+detail_userid+"/"+detail_contactid
})

入口是：

ContactDetailManagePageModel.prototype.init = function(m,n){ 
    detail_userid = m;
    detail_contactid = n;
    var myContactDetails = new ContactDetailCollection();
    var contactDetailListView = new ContactDetailListView({
            collection: myContactDetails
        });     
    myContactDetails.fetch({reset:true});
}

但它运行时，网址为：的http：//本地主机：8080 / WS /用户/联系人/ 0/0 ，这意味着分配给detail_userid和detail_contactid不成功，我不知道为什么。

But when it runs,the url is :http://localhost:8080/ws/users/contacts/0/0,it means that the assignment to detail_userid and detail_contactid is unsuccessful,I don't know why.

希望对你help.Thanks。

Hope for your help.Thanks.

推荐答案

我觉得你是静态definining的urlRoot和url属性正在运行的PageModel（不太清楚的init之前，你在哪里得到m和n从虽然...）

I think you are statically definining the urlRoot and url properties before you are running the init of the PageModel (not quite sure where you are getting m and n from though...)

这两个网址，urlRoot可以是函数，所以你可以在实例化过程中传递的选项，让他们在模型上动态地设置。

Both url and urlRoot can be a function, so you can pass in options during instantiation and have them dynamically set on the model.

简单的例子覆盖定义集合，然后创建有一个

Simple example covering defining the collection and then creating one

var ContactDetailCollection = Backbone.Collection.extend({ 
    model: ContactDetail,
    url: function(){
      return URL_CONTACTS1 + this.options.detail_userid + "/" + this.options.detail_contactid;
    }
});

var myContactDetails = new ContactDetailCollection({
  detail_userid: foo,
  detail_contactid: bar
});

正如我所说，我不知道你的初始化函数是干什么的，我猜它是从您的应用程序定制的东西，我并不需要担心。

As I mentioned, I'm not sure what your init function is doing, I'm guessing it's something custom from your app that I don't need to worry about.

我相当肯定带走主要的是设置URL和urlRoot动态

I'm fairly sure the main thing to take away is to set url and urlRoot dynamically

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